Quick-action device for vises or wrenches



F. W. McQUEEN. QUIICKACTION DEVICE FOR VISES 0R WRENCHES.

- I APPLICATION FILED MAYIZ. 192]. 1,415,103.

Patented May 9,1922.

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-H Franc/5 M fifiqueen iiuiiiiiimli /////I/I//l MMMEEHE F. W. McQUEEN. QUICK ACTION DEVICE FOR VISES 0R WRENCH ES. APPLICATION FILED MAYI2,192I.

1 ,4 15,103, Patented May 9, 1922.

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F W McQUEEN QUICK ACTION DEVICE FOR VISES 0R WRENC HES.

- APPLICATION FILED MAYIZ. I921.

Patented May 9, 1922.

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:part in detail.

:ing my invention.

FRANCIS w. MCQUEEN, or'rmn'r, MICHIGAN, assrelvon or ONE-HALF HENGESBAIIGH, or FLINT, ,ivticrrieen.

P emtries "r0 LEWIS M.

QU'ICK-ACTI ON nnvrcn FOR vIsL's ole'wanncnns.

To all whom it may concern:

Beit known that I, FRANCIS W. MoQunEN, a citizen of the United States, and a resident of the city of Flint, in the county of Genesee' and State of Michigan, have invented certaln newand useful Improvements in a Quick- Action Device for Vises or renches, and

I do hereby declare that the following is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, and to the numerals of reference markedthereon, which form a part of this specification.

It is an'ob'ject of this invention to provide a movement for a clamp such as a vise ora wrench in which the aws may be quickly made to approach to within very nearly'the desired distance and then may be powerfully moved the remainder of their travel to that distance. i

It is a further object of my invention to provide such a device in which the change from slow to quick movement may be easily and readily made.

i It is a further object 0t my invention to provide suchla device in whichthe arrange ment is biased towards the slow moving po-.

sition. i

It is afurther object ofrmy invention to i provide such. a device which may be readily and inexpensively manufactured.

Other and further. important objects of this invention will be apparent from the dis closuresin the drawings and specification.

The invention -(in ,a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings t 1 Figure 1 :isa frontview of avise embody ing my invention. I

Figure 2 1s a section showing theimproved "Figure 3 is avsection on the line of re 1.- a

Fi urel. V a

igure 5 is a view of a' wrench embody- Figure 6 is an edge view-ofthe wrench.

:Figure 7 .is a's ectional view on theline 7-7 of Figure 6. Y

Figure 8 isa section upon the line 8-8 of Figure 5.

Specification of Letters Patent.

Application filed May 12, 1921. SeriaiNo. 468,923.

collar.

-' with the bearing collar 8v l+igure 4 is a-section on the line4-4 of Patented Hay 9,4922.

- Figure 9 is a section similar to Figure? showing a modification; I v V Figure 10 is a section on the line 101O of Figure 9.

As shown on the drawings: The reference numeral 1 indicates the stationary jaw of a vise. At 2 there is pivoted to this aw a screw 3 which works in a sleeve.

of the tube 4 and the screw 3. L The bearing collar cooperates with a thrust arm 10 which has'tceth, one face of which ll is beveled to slip over the beveled face 9 of the bearing is at right angles to the axis ofthe tube 4 and screw and will fit against the plain iac'e ofthe' bearing collar '8. Thearmv lO'is pivoted at 13 to the movable jaw 14 of the vise. This jaw has'fianges "15 which travel in ways 16 upon the bed or" the vise.

I The operation of the device will be read ily understood :trom'thc foregoing description: When the jaws" to be separated by a considerable distance the thrust bar 10 is elevated until its teeth no longer contact Jaw 14 is then moved outward until the vise is opened to the desired extent. The thrust bar 10 is then lowered and the bearing collar 8 will enter the notches between two of the teeth. If the edge of the bearing collar should come against the edge of the thrust 'barbetween two teeth, the handle 5 would be turned in direction to open the vise until the fiat sun- "face of the bearing collar. was beyond the edge of the face 12 of the tooth. The thrust, bar 10 will then fall into its illustrated posifblOIl. Rotating. the handle 5 in the opposite direction will cause the surfaceof the bear- .[ing collar to press against the face 12, of

the tooth and so move the jaw 14 towards the jaw 1. Thus the jaws may be quickly separated to'a distance a little greater than is needed :to grasp any object and then The opposite face 12 ofthese teeth During the tightening of the vise the fric tion of the collar 8 against the face 12 of its tooth will not tilt the thrust bar 10 because this thrust bar is guided between a pair of jaws 15 upon the bearing block 17 for the sleeves 4. When the handle 5 is turned in the direction to loosen the vise the elasticity of the jaws 1 and 14: and'of the object clamped between theinwill cause the face 12 of the tooth upon thebar '10 to follow'the collar 8 but when the motion ofthe handle is continued in this direction the jaws will not follow more than a short distance. The collar 8 will. then by its beveled surface 9 contacting with the oblique side of'the'teeth 11 lift the thrust bar 10, and

further rotation of the handle 5"will ac coinplish nothing; but under these circurnstances the aw 14 is loose and may be SllCl I by a quick motion to any desired position.

If the rise should stickfa suiiicient force to start the opening movement maybe had by holding the end of the thrust. bar 10 between the guides 15 and turning the handle in the opening direction. The bevel of thetooth edges 11 and 'of'the face 9 is made nearly vertical in order that no great effort shall be needed to hold the end of t 2 bar 10 down. I i V Figurestlaand 10 show a modification of a vise in which the handle is'applied atthe other end... In-these figures the reference characters, like those already: mentioned,

. desi nate the same ){LlllS as in Fi ures 1 to h to ' 1: Instead'of applyingthe handle tothe sleeve 4; it is in this modification applied towthe' screw 3. For this purpose, the'jaw.

1 is provided with a passage through which the stern of the screw 8 extends. A

collar 51 is made integral with this stern and seats in a recess 57 in the jaw 1. A collar 52is pinned to the stem 3 at a point to contact with the other surface of the jaw 1.

These two collars prevent the screw from" moving lengthwlse so that when the screwis turned, the sleeve l must travel.

-The coll'ar8 is attached to the sleeve 1 to travel therewith as already described.

Rotation of the collar 8 isprevented by its flattened side'bearing against thebase.

more positive llOldlIlg of the collar from ro-Y,

tationmay be secured by providing the collar with a lug 54t to travelin thegroove 55 in the base.

Thesleeve 4L will be held from a rotating by-the firm grasp which the fasten-T r ing 7 affords between the sleeve andthecolto'the'collar 8; the two maybe pinned to-- a lar8. "If it is desired to positively insure that the sleeve-4: will never rotate relative P-gether as is illustrated in Figure '10 at 56. .The application of this invention to a wrench-is illustrated in Figures 5 to 8! a In this'application the jaw '21 is fixed to the bar 23 which has u n a teeth 39 which act'like threads of a screw cooperating with the rotatable'nut 25. 28 which has one beveled face .29 and the oppositeface at right angles to the axis of the nut Athrust'bar 30*is provided with This nut has aflange teeth having oblique edges 31 and edges 32 i which extend at right angles to the axis of thering.' The thrust bar 30 ispivotedr at 33 i to the niovable jaw- 34:. "it is biased to the illustratedposition by means of a spring 40 seated in sockets in thebar itself and in the aw The guidlng member 36 1s 'm ounted upon the bar 23 just outside of the flat face of thefiange 28. It has twov upstanding guides'35 between "which the thrust bar 30 isreceived. The'vguide36 is con strained to move along the shaft '23 with the contacts with the opposite'side of the nut.

The'operationof the wrench is similar to -the operation of the vise above described;

Lifting the thrust bar30 out'of engagement with the flange the movable jaw 3 lazmay he slid along the bar 23 until aposition is reached a little wider open than the size of the-object. to be grasped requires. r The. thrust bar.30 isthen allowed to contact with the flange 28 in r'esponse to the spring 4.0. If he flange'28pdoes not enterexactly be- ;t veen'two' teeth as illustrated in Figure 7 the oblique surface 29 will contact with a" nut 25' by being yoked to aguide 4E6 which surface 31 of-a t'ooth. Byrotating the nut in a direction to tighten the wrench the :lost -motion between the flat face of-the.

flange 28 andth'e face 32fof-the correspondingtooth'may be taken up and thenth'e j 2% will move in response tofurther'rotation 1 of the nuts 25. If the lost; motion to. be thus taken up is too large for convenience or would bring the nut to the end of the screw formed by the teeth"39,the head 25 may be rotated a few turns-in the directionto loosen the wrench, with the result that the. edge of the flange 28 passes thepointofa tooth and then the barSO ii -response to the spring 40 slipsintothe illustrated position. .iThere' upon the'head may be, rotated in the opposite direction to tighten the wrench and the flat face of the flange 28'willcontact with the surface -32 of'atooth as before. In rotating the head 25 in the direction to'loo'sen the wrench after it'has grasped an object the first few turns of the head will" be accompanied by' anopening motion' dueto the elasticity of the jaws and ofy the vobject clampedf To continue-"rotation of the head- 25 will be only to lift the bar 30. by the cam action o'fthe oblique surfacef29 adj acent the oblique surface 31; Consequently a [quick motion maybe substituted, by lifting the bar .30 andsliding the :head- 34 untilt-he wrench" is as wide open as is desired. r r

I am aware that numerous details of con struction may be varied. through ta:. wide tion between said member and the fixed an I preventing longitudinal movement of the threaded member, a second threaded member rotatable relative to the first threaded member and thereby moved longitudinally of said first threaded member, a toothed member connected to the movable jaw, and means moved longitudinally of the first threaded member by the said longitudinal movement of the second threaded member and cooperating with the teeth of said toothed member to move said movable aw when said toothed member is in one position, motion of said toothed member about its pivot removing the cooperation between its teeth and said means.

2. In a quick motion clamp, clamping members, a screw-drivenmember having two faces one toward and one away from the clamping members, the face away from the clamping members being beveled, and a thrust bar pivoted to one of the clamping members and having teeth with beveled faces for cooperating with-the beveled face of the screw driven member.

3. In a clamp, a fixed member, a movable member, a thrust bar pivoted. to the movable member,screw drivenmeans for exerting a pressure against said thrust bar, said thrust bar being biased intoa position in which it engages with said screw-driven means. I

4. In a clamp, a fixed member, a movable member, screw-driven means for moving said movable member toward said fixed member, said means including a separable connection, and cam surfaces acting upon rotation oi the screw-driven means in the opposite direction to separate said connection.

In a clamping device, a fixed jaw, a movable jaw, a threaded member, a connection'between said member and the tired jaw preventing longitudinal movement of the threaded member, a second threaded member rotatable relative to the first threaded member and thereby moved longitudinally of said first threaded member, a toothed member pivoted to the movable jaw, and means moved longitudinally of the first threaded member by the said longitudinal movement of the second threaded member and cooperating with the teeth oi said toothed member to move said movable aw.

6. In a clamp, a movable member, a'thrust bar movably connected at one end to said member, means for exerting a thrust through said thrust bar including a pair of screw threaded members, rotational movement of one of said members causing it to travel longitudinally of the other, a guide for said thrust bar at a distance from the connected end thereof said guide being stationary relative to one of said screw-threaded members 

